The fear of aging and being ignored affects the behavior of politicians like Anthony Weiner, stars like Arnold Schwarzenegger—and the rest of us, says Christopher Dickey. I had lunch recently with a good friend who is a veteran of the CIA and one of those spies who is a study in grays—handsome enough, but always in the background; never the first person you’d notice in a crowded room, and very possibly the last. Given his profession, I thought he wanted to be that way. So I was surprised when, early in the conversation as a college student served us iced...